Mast-elevating mechanism for portable pulling machines



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,l -m @EW ATTORNEY CIS. WRIGHT MASII VI}LI."|VA'IING MECHANISM FOR PORTABLE PULLING MACHINES Filed April 23, 1927 2 Sheets-Sheet 2 INVENTOR.

ATTORNEYS.

Patented Mar. v(i, 1928.

UNITED STATES PATENT OFFICE.

cLYnE s. WRIGHT, or ToLEio, omo, AssIGNoR To THE NATIONAL sUrPL! uol-` rANY, or TOLEDO, omo, A coRPonATIoN or' omo.

HAST-ELEVATING MECHANISM FOR PRTABLE PULLING MACHINES.

-\ l Application led Api-11 23, 1927. Serial No. 185,984.

My invention relates to mast elevating mechanism for portable machines for pulling sucker rods, tubing, and other devices from wells or for performing other hoisting operations.

Heretofore it has been common to provide two gin poles in erecting a mast in position at a well hole, the hoist line passing over the gin poles and down to a reel or drum mounted close to and parallel with the center bunk or swivel upon which the ,gin poles'are mounted. The handle for operating the drum vhas been placed close to the end thereof and therefore so near to the base of the gin poles and the mast that ythe operator of the handle is .liable to be injured Vin case the gin poles or the mast should accidentally fall.

It is one object of this invention to use a 2 single gin pole and to lead the hoist'line down through the vertical king-pin or pivotpost of the center bunk or swivel, so that the line will be perfectly free to operate, no matter what position the mast, gin pole and center bunk may assume. Another object is to attach the drum to the wagon rather than to the base or support of the gin pole, and to locate the handle at a, safe distance from the gin pole and mast. My invention also embraces details and combinations which will be better understood in connection with their description. Referring to the accompanying drawings, Fig. 1 is a side view of a pulling machine embodying my invention, a portion being broken away; Fig. 2, an end elevationV of thewagon and a side View of the gin pole and mast and adjacent parts in the positions they assume after the mast has been erected, the upper parts of the gin pole and .mast and adjacent parts being omitted; Fig. 3, a detail diagrammatic View showing the winding drum and the course the lower end of the hoist line takes; Fig. 4, a section on the line IV-IV on Fig. 5, the centeirbunk 'and parts adjacent thereto, parts being broken away, and Fig. 5, an elevation, Ithe view being taken at right angles to Fig. 4, and the mast being inV transverse section.

lThe pullingmachine has not been com- I0 pletely illustrated to show the parts as they are in the posit-ions they assume from the time the gin ole and mast leave their positions shown in Fig. 1 to the time the mast is ready for hoisting o erations. The pull- 55 ing machine shown is or the most part ,old and the parts shown are those closely associated with the particular portions in which my invention resides.

On the drawings, 1 designates a wagon l0 or truck having the frame 2 which supports centrally thereof the center bunk or swivel or yoke 3 having the downwardly extending hollow king-post, swivel-post` or king-pin 4 mounted to rotate on a vertical u axis in the bearings 5 and 6 supported by the cross members 7 and 8 of the frame. The swivel has the upstanding arms 9 and 10 which rigidly support the horizontal hollow trunnion 11, to one end of which the 70 usual. diagonal brace is attached to brace the gin pole against lateral movement.

On the trunnion 11 and between the arms 9 and 10 I secure the cradle or saddle 14 having the arcuate seat '15 for the mast 13 u when in its lowered position, which it has while the wagon'l is moving. To one end of the saddle the gin pole 16 is pivotally mounted on 'the bolt 17 so that it may be swung up to a position shown in Figs. 2, 9 4 and 5 and down to an inclined position as shown in Fig. 1. isa guy-rope for limiting the pivotal movement of the gin-Y pole upwardly. It is fastened to the top of the gin-pole and the lower end of the mast carriage 18 pivotally connected to the usual links 36 l (only one shown) which are pivoted to the trunnion 11 in the usual or other suitable manner. The 'mast is connected to the carriage 18 in any Suitable manner, as 9 by the band 19. When the mast is horizontal and in place for transportation by the wagon the rear end of the carriage 18 rests on the bunk or support 20 on the front end of the wagon. A bunk or saddle 21 on u the wagon at the rear of the center bunk 3 supports the rear part of the mast.

The cross-member 8 of the frame 2 supports the'pendent bearings 22 between which th.. winding drum 23 1s mounted on the shaft 24 turning in the said bearings. The drum 23 is parallel with the sides of the frame 2 and the shaft 24 extends out to the rear end of the wagon and is mounted to turn in the bearing 25 pendent from the frame 2. The rear end of the shaft has the ear 26 meshin with the pinion 27 operate by the han le 28 or other suitable means.

The hoist line 29 has one end attached to the sheave block 30 on the top of the mast 13 and runs back and forth over sheaves 31 in the block and over sheaves 32 near the top of the gin ole 16 and finally over the sheave 33, under t e sheave 34`and over the sheave 35 and thence down through the king-post 4 to the Winding drum .23. The sheaves 33, 34 and 35 are mounted between the arms 9 and 10 and on the bunk or swivel 3. The sheave 35 is placed preferably so that the line 29 stands centrally in the kin ost. The sheave 34 is placed at one side o t e periphery of the sheave 35 so as to allow the line 29 to pass upwardly at 'the side of the mast which lies dlrectly over the sheave 35. The sheave 33 merely directs the line properly to the sheave 34, regardless of the position of the gin pole, the line 29 always being parallel with the in pole.

With t e parts as in Fig. 1, the gln pole and mast are erected as follows, the description being abbreviated as the general operation is well known to those acquainted with the art to which this invention belon When the handle 28 is turned to wind t e line 29 on the drum 23, the gin pole 16, being somewhat upwardly and forwardly inclined, is caused to move up to the left on the pivot 17 and until the guy rope 35 becomes tight. Then the gin pole becomes stationary.

Next the center bunk 3 with the carriage 18, the mast 13 and the gin ole 16 and accessory parts are swung aroun crosswise of the .frame members 2. The forward end. of the swung unit being the heavier settles to the ground leaving the mast in a partly raised position and supported by the carriage 18 which is still pivotally connected by the links or side bars 36 to the trunnion 11. Upon further turning the handle 28 the mast will be raised to the position as shown in Fig. 2, this being accomplished in the usual manner which is old and well known.

By my improvements the hoist-line reel does not travel with the center bunk or swivel but has a fixed position on the wagon; the handle for turning the reel is at .the end of the wagon distant from the gin pole and mast and not in line with them in case they should fall; the hoist line reel is under the mast and beneath the center bunk, the sheaves being arranged so that the line travels up and down in the swivel-post in the center bunk and thence on sheaves which direct it laterally of both the mast and the gin pole; and a single gin pole is used where it is customary to have two.

I claim- 1. In a portable hoisting mechanism, n stationary frame, a hollow vertical rotary swivel post, a mast and a gin pole supported by the samc, and a hoist line for the mast and gin pole, means for directin the hoist line down through the hollow o the post, and a reel carried by the frame for operating the hoist line and connected to the line to draw it down through the said hollow.

2. In a portable hoisting mechanism, a stationary frame, a hollow vertical rotary swivel post, a mast and a gin pole supported by the same longitudinally of the frame and movable with the post so as to be transverse of the frame, and a hoist line for the mast and gin pole, means for directing the hoist line down through the hollow of the post, a reel carried by the frame for drawin the hoist line down throu h the said ho low, and means at the end o the frame for operating the reel.

3. In a ortable hoisting mechanism, a stationary rame, a hollow vertical rotary swivel post, a mast attached to and movable with the post, a saddle over the hollow in the post to support the mast in a reclining position, a gin pole movable withgthe post, a hoist line extending down throu h the hollow of the post, sheaves guiding t e line laterally of the mast and to the n pole, a stationary reel for drawing the e down through the said hollow, and means toward one end of the frame for operatin the reel.

4. In a portable hoisting mec anism, a stationary frame, a hollow vertical rotary swivel-post carried thereby, a mast, a saddle carried by the post and above the same to support the mast in a reclining osition2 a single reclining gin pole pivota y carried by the swivel post at one side of the mast, a hoist line for raising the gin ole and the mast, means for guiding the hoist line down through the hollow of the swivel-post, and laterally of the gin pole and the mast and thence to the top of the gin pole -d mast, a winding reel for the hoist line supported independently of the swivel post and arlll ranged to draw the line down through the said hollow, and reel-operating means remote from the gin pole and the mast and arranged out of the path of the accidental falling of the same.

5. In a portable hoisting mechanism, a stationary frame, a hollow vertical rotary swivel post, a' pair of upri ht arms on the latter, a horizontal trunmon carried by arms directly over the hollow of the post a saddle on the trunnion, a mast pivotally c onnected to the trunnion and adapted to 11e on the saddle, a gin pole pivotally conmamen and a handle for operatin the shaft, the latter extending transverse y of the mast and gin pole and the handle being remote 10 therefrom.

In testimony whereof, I hereunto aflix my signature.

' CLYDE S. WRIGHT-a 

